The bodies of Erica Bond and her son Lochlan were found at her family home in Wyongah, New South Wales by the schoolboy’s grandmother.
Australia police believe Erica killed her son before committing suicide.
A neighbour said the boy’s grandmother screamed for help after discovering the bodies in the home.
Lochlan is reported to have been in his bedroom and his mother’s body was found outside.
Mrs Bond suffered from mental health issues and had posted to social media about struggles with depression just weeks before her death.
In one of her last Facebook posts she shared video about suicide prevention and message read saying “depression is REAL. People can smile all day and still be broken inside.”
Husband and father Andrew Bond, was at work when the tragedy happened and arrived home to the devastating news.
Ellen Smith, the mother of one of Lochlan’s close friends, told The Daily Telegraph : “How do I explain to my boy his best mate has passed away? How do you explain that to a 13-year-old?”
“I can’t stop the tears streaming down my son’s face, it’s going to hit him hard being in his classroom,” another mother wrote on Facebook.
Reacting to the deaths via Facebook on Wednesday, Andrew Bond posted a brief message:
“Words cannot explain,” he wrote, according to The Daily Telegraph . “My angels. Deeply loved.”
Mrs Bond’s Facebook page has become a target for trolls, with one saying: “Rot in hell”.
In a Facebook post on Tuesday, Tuggerawong Public School principal Grant McFarland told parents support would be available for Lochlan’s classmates and other students over the coming days.
“It is your personal decision about what sensitive discussions you may choose to have with your children tonight,” he said.
“Our heartfelt thoughts are with our much-valued student’s family and friends at this time.”
Wyong state MP David Harris took to Twitter on Tuesday night to publicly express his condolences.
‘My condolences to the family and friends of those involved in the tragic deaths in Wyongah today. Very sad to hear. A real tragedy,’ he tweeted.
Tuggerah Lakes Police Acting Inspector Matt Kelly confirmed the tragic deaths were the result of a murder-suicide, the Express Advocate reported.
“Detectives are investigating the circumstances surrounding their deaths but no other parties are being sought in relation to this incident,” New South Wales Police said.
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